CN211599425U

CN211599425U - Synchronous belt tension adjusting mechanism and camera with same

Info

Publication number: CN211599425U
Application number: CN201921773596.3U
Authority: CN
Inventors: 王树纲; 范元明; 吴小伟
Original assignee: Zhejiang Dahua Technology Co Ltd
Current assignee: Zhejiang Dahua Technology Co Ltd
Priority date: 2019-10-22
Filing date: 2019-10-22
Publication date: 2020-09-29
Anticipated expiration: 2029-10-22

Abstract

The utility model relates to a tension force adjusting mechanism for a synchronous belt, which comprises a base, a motor bracket, a synchronous belt, a first mounting column and a pre-tightening piece, wherein the motor is fixed on the motor bracket; a first sliding hole is formed in the motor bracket, one end of the pre-tightening piece is fixedly connected to the first mounting column, and the other end of the pre-tightening piece extends out and is clamped against the first sliding hole; the preload piece can slide along the first sliding hole and adjust the distance between the motor bracket and the base. A camera having the same is also provided. Firstly, the motor support and the base are pre-fixed, then the motor support is moved to adjust the tension of the synchronous belt, and finally the motor support is locked on the base to complete the tension adjustment of the synchronous belt. The adjusting mode is simple and reliable, the tensioning effect is good, the adaptability is high, and the cost is low.

Description

Synchronous belt tension adjusting mechanism and camera with same

Technical Field

The utility model relates to a camera technical field especially relates to a hold-in range tensile force adjustment mechanism and have its camera.

Background

The camera is used for capturing real-time images of a monitored area, is generally provided with a rotating part for adjusting a monitoring view, and particularly realizes rotation through a motor and a synchronous belt for transmission, wherein the synchronous belt transmission is widely applied to the camera, particularly a spherical camera due to good stability, low noise and low cost.

The tensioning force of the synchronous belt needs to be controlled in a proper range, the motor is easy to slip and step out due to the excessively small tensioning force, the motor is also likely to slip and step out due to the excessively large tensioning force, and the service life of the synchronous belt and even a camera is also affected due to the fact that the tensioning force is not adaptive. Because the motor and the hold-in range of traditional camera all connect the back hemisphere at the camera, the distance of motor and hold-in range is very near, is close the laminating, and the tensile force of hold-in range is difficult to obtain effectively adjusting under the interval so near, also is convenient for the installation of hold-in range. And fix in advance the casing with the motor support through the screw, adjust the tensile force of hold-in range in the installation through the slip motor support, adjust the back again with the screw locking, this kind of adjustment mode is because the degree of screw locking in advance is uncontrollable for the driving force that acts on the motor support can't effectively transmit to the hold-in range on, and then leads to the tensile force of the hold-in range after adjusting to can't satisfy the operation requirement.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the first technical problem that a hold-in range tensile force adjustment mechanism that can effectively adjust hold-in range tensile force, and easily install is provided to above-mentioned prior art current situation.

The utility model aims to solve the second technical problem that provide a can effectively adjust hold-in range tensile force, and easily the camera of installation to above-mentioned prior art current situation.

The utility model provides a technical scheme that above-mentioned first technical problem adopted does: the tension adjusting mechanism for the synchronous belt comprises a base, a motor support, the synchronous belt, a first mounting column, a second mounting column, a pre-tightening piece and a fastening piece, wherein the motor is fixed on the motor support;

the motor support is respectively provided with a first sliding hole and a second sliding hole, one end of the first mounting column penetrates through the first sliding hole and extends out of the motor support, and the pre-tightening piece is fixed in the first mounting column so as to enable the motor support to move along the length direction of the first sliding hole relative to the base and adjust the tension force of the synchronous belt;

the fastener passes through the second sliding hole and is fixed in the second mounting column, so that the motor bracket is fixed on the base.

In one embodiment, the first mounting post includes a post body and a boss, the boss is connected to the post body, a first shaft hole is formed in the first mounting post and penetrates through the post body and the boss, and the preload member is fixed in the first shaft hole.

In one embodiment, the first mounting post comprises a post body and a boss, the boss is connected to the post body, the outer diameter of the boss is smaller than that of the post body, a first shaft hole penetrating through the post body and the boss is formed in the first mounting post, and the preload piece is fastened in the first shaft hole; the boss can be embedded in the first sliding hole.

In one embodiment, the outer diameter of the boss is smaller than that of the column, and the first sliding hole is sleeved with the boss and can move along the axial direction of the first sliding hole.

In one embodiment, the boss passes through the first sliding hole and extends out of the motor support, and the height of the boss extending out of the motor support is 0.3 mm-0.8 mm.

In one embodiment, the boss is integrally formed with the post; or,

the boss and the cylinder are in a split structure.

In one embodiment, the length direction of the first slide hole is the same as that of the second slide hole; and/or the presence of a catalyst in the reaction mixture,

the width of the first sliding hole is larger than that of the second sliding hole.

In one embodiment, the number of the first mounting posts and the number of the second mounting posts are respectively set to three, and the first mounting posts and the second mounting posts are oppositely arranged on the base in two rows, wherein one row is that one second mounting post is arranged between the two first mounting posts, and the other row is that one second mounting post is arranged at the side edge of the two first mounting posts.

In one embodiment, the number of the first mounting posts and the number of the second mounting posts are respectively set to two, and the two first mounting posts and the two second mounting posts are arranged in a mutually crossed and spaced mode relative to the base.

In one embodiment, the preload member and the fastener are both screws.

The utility model provides a technical scheme that above-mentioned second technical problem adopted does: the utility model provides a camera, includes camera and foretell hold-in range tensile force mediation mechanism, the camera is located in the base, and through the hold-in range connect in the motor, the camera by motor drive rotates.

Compared with the prior art, the beneficial effects of the utility model reside in that: this hold-in range tensile force adjustment mechanism and have its camera, through passing first slide hole and stretching out in the motor support with the one end of first erection column to be fixed in the pretensioning piece and so that longitudinal fixation and only can lateral shifting between motor support and the base between the first erection column, in order to realize the preliminary fixation between motor support and the base, lateral distance changes when taking place relative movement between motor support and the base, is convenient for adjust the tensile force of hold-in range. After the tension is adjusted, the motor support is fixed on the second mounting column through the fastener, and the motor support and the base are finally fixed by means of friction. Because the pre-fixing mode is controllable, the tension adjusting device has the advantages of stability, reliability, high efficiency, good tension effect, lower cost and higher adaptability to the existing structure.

Drawings

Fig. 1 is a schematic perspective view of a synchronous belt tension adjusting mechanism provided in one embodiment;

FIG. 2 is an enlarged view of a portion A of FIG. 1;

FIG. 3 is a top view of a synchronous belt tension adjustment mechanism provided in one embodiment;

FIG. 4 is a schematic cross-sectional view of a synchronous belt tension adjustment mechanism provided in one embodiment;

FIG. 5 is a schematic diagram of an assembly structure of a synchronous belt tension adjusting mechanism provided by one embodiment;

FIG. 6 is an enlarged partial view of portion B of FIG. 5;

FIG. 7 is a top view of a synchronous belt tension adjustment mechanism provided in one embodiment;

FIG. 8 is an elevation view of a synchronous belt tension adjustment mechanism provided in one embodiment;

reference numerals:

the synchronous belt tensioning force adjusting mechanism comprises a synchronous belt tensioning force adjusting mechanism-100, a base-110, a motor-120, a motor bracket-130, a first sliding hole-131, a second sliding hole-132, a synchronous belt-140, a first mounting column-150, a column-151, a boss-152, a first shaft hole 153, a second mounting column-160, a second shaft hole-161, a pre-tightening piece-170 and a fastening piece-180.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.

It is to be understood that in the description of the present invention, the directions or positional relationships referred to by the directional terms such as "front, rear, upper, lower, left, right", "lateral, longitudinal", etc. are generally based on the directions or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse explanation, these directional terms do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The utility model provides a hold-in range tensile force adjustment mechanism can be used for but not limited to the camera, and wherein the camera is the preferred ball-type camera.

The shell of the dome camera is roughly composed of two hemispheres, wherein the camera is arranged on one hemisphere, the synchronous belt and the motor are often connected on the other hemisphere, in the installation structure, the distance between the motor and the synchronous belt is very close to be almost attached, and the tensioning degree of the synchronous belt is difficult to adjust at the close distance.

At present, the tension of the close-range synchronous belt can be adjusted by pre-fixing and adjusting the motor support and the base through the fastening screws in the process of installing the motor, and locking the fastening screws after the adjustment is finished. At first with motor fixed mounting on the motor support in the installation to place corresponding to the base, be equipped with the erection column on the base, the erection column is located the downside of motor support, has seted up the screw in the erection column. One end of the synchronous belt is connected to an output shaft of the motor, and the other end of the synchronous belt is connected to a driven wheel on the base.

The motor support is provided with a sliding hole, a fastening screw penetrates through the sliding hole and is pre-tightened in the screw hole, and the fastening screw is screwed into the screw hole but is not locked in the pre-tightening process. At the moment, the nail part of the fastening screw is positioned in the sliding hole, and the motor bracket can still slide relative to the base and can adjust the tension of the synchronous belt. And then tensioning the synchronous belt to enable the tension force of the synchronous belt to meet the use requirement, and finally, completely screwing the fastening screw into the screw hole to be locked through friction force.

It should be noted that, in the above installation process, the tension of the synchronous belt can be adjusted by the tension spring, the tension meter or the thrust meter, so that the tension of the synchronous belt meets the use requirement.

Because fastening screw usually is by manual operation in order to screw into the screw hole, the elasticity degree that fastening screw twisted is uncontrollable, and the too loose of twisting or the tension all can lead to the frictional force between fastening screw and the base to be not the adaptation, and make the driving force that acts on the motor support effectively transmit to the hold-in range on, and then lead to the tensioning force of the hold-in range after adjusting can't satisfy operation requirement.

Based on this, referring to fig. 1 to 6, the preferred embodiment provides a timing belt tension adjusting mechanism 100, which includes a base 110, a motor 120, a motor bracket 130, a timing belt 140, a first mounting column 150, a second mounting column 160, a preload member 170, and a fastening member 180.

Referring to fig. 5, the motor 120 is fixed to the motor bracket 130, the first mounting posts 150 and the second mounting posts 160 are respectively fixed and arranged on the base 110 at intervals, the motor bracket 130 is connected to the base 110 through the first mounting posts 150 and the second mounting posts 160, one end of the timing belt 140 is connected to an output shaft of the motor 120, and the other end is connected to the base 110. The tension of the timing belt 140 may be adjusted as the motor bracket 130 moves laterally relative to the base 110.

The motor 120 is a power device in the camera, and is used for driving the lens to rotate or swing so as to adjust the direction of the lens; or for driving the lens or associated lens to move linearly for focus adjustment. The motor 120 is finally fixedly mounted to the base 110 by the motor bracket 130. The base 110 may be a housing of the camera or a bracket provided in the camera, as a support of the entire synchronous belt tension adjusting mechanism 100. The base 110 may have any shape and configuration, and is not limited to the shape and configuration shown.

The fixing manner between the motor 120 and the motor bracket 130 is not limited, and may be any suitable manner such as screwing, snapping, welding, riveting, etc. What is illustrated in the preferred embodiment is the fixation of the motor 120 to the motor bracket 130 by means of a threaded connection.

It can be understood that the presenting form of the motor bracket 130 can be set as required, the motor bracket 130 can be fixedly connected in a split manner with respect to the motor 120, and can also be set as an integrated structure, and when the motor bracket 130 is integrally formed with the base of the motor 120, the motor bracket 130 is also integrated on the base of the motor 120.

Further, the timing belt 140 may be directly or indirectly connected to an output shaft (not shown) of the motor 120. In one embodiment, a motor synchronizing wheel (not shown) is disposed on the output shaft of the motor 120, and a driven wheel is disposed inside the camera. The synchronous motor wheel can be directly and integrally formed on the output shaft of the motor, can be fixed on the output shaft of the motor in a split mode, can be in transmission connection with the motor output shaft through meshing of gears or other transmission modes, and the synchronous belt 140 is in transmission connection with the synchronous motor wheel and the driven wheel.

Referring to fig. 2 and the partially enlarged schematic view of fig. 6, in order to adjust the tension of the timing belt 140 during the installation of the motor 120, the motor bracket 130 is provided with a first sliding hole 131 and a second sliding hole 132, one end of the first mounting post 150 passes through the first sliding hole 131 and extends out of the motor bracket 130, and the preload member 170 is fixed in the first mounting post 150, so that the motor bracket 130 can move along the length direction of the first sliding hole 131 relative to the base 110 to adjust the tension of the timing belt 140; the fastener 180 passes through the second slide hole 132 and is fixed in the second mounting post 160 to fix the motor bracket 130 to the base 110.

Preferably, the first mounting post 150 includes a cylinder 151 and a boss 152, the boss 152 is connected to the cylinder 151 and extends out of the motor bracket 130, and an outer diameter of the boss 152 is smaller than an outer diameter of the cylinder 151. The first mounting post 150 has a first shaft hole 153 formed therein, the first shaft hole 153 penetrates the post 151 and the boss 152, and the preload member 170 penetrates the first sliding hole 131 and is fastened in the first shaft hole 153. A second shaft hole 161 is formed in the second mounting post 160, the second shaft hole 161 penetrates through the second mounting post 160, and a fastener 180 penetrates through the through hole 132 and is fastened in the second shaft hole 161.

Preferably, the boss 152 is integrally formed with the cylinder 151, or a separate structure is adopted between the boss 152 and the cylinder 151. It should be noted that, when the boss 152 and the column 151 are formed as separate bodies, they may be fixed by welding, riveting or other common fixing methods, which is not limited herein.

Preferably, the height of the boss 152 protruding from the motor bracket 130 is 0.3mm to 0.8 mm. It is further preferable that the height of the boss 152 protruding from the motor bracket 130 is 0.5mm, and it should be noted that the pre-fixing manner provided by the preferred embodiment that the boss 152 passes through the first sliding hole 131 and protrudes from the motor bracket 130 replaces the conventional screw portion of a screw to pass through the second sliding hole 132 and be fixed to a screw hole, and the pre-fixing process is stable, so that reliable and efficient adjustment of the tension force can be realized.

The first mounting column 150 and the second mounting column 160 are fixedly disposed on the base 110, the first sliding hole 131 is disposed opposite to the first mounting column 150, and the motor bracket 130 is fixedly connected to the base 110 through the preload member 170, and the second sliding hole 132 is disposed opposite to the second mounting column 160, and the motor bracket 130 is fixedly connected to the base 110 through the fastening member 180.

Specifically, although the tightening member 170 is fixed to the first mounting post 150 through the first sliding hole 131 and the fastening member 180 is fixed to the second mounting post 160 through the second sliding hole 132, the tightening member 170 and the fastening member 180 in the preferred embodiment may be, but are not limited to, screws, and the number and shape of the tightening member 170 and the fastening member 180 are respectively adapted to the number and shape of the first mounting post 150 and the second mounting post 160. The first shaft hole 153 and the second shaft hole 161 have the same diameter.

In one embodiment, the first sliding holes 131 and the second sliding holes 132 are arranged at intervals, and the first sliding holes 131 and the second sliding holes 132 are strip-shaped holes. Preferably, the length direction of the first slide hole 131 is the same as the length direction of the second slide hole 132, and further preferably, the width of the first slide hole 131 is greater than the width of the second slide hole 132.

The preload member 170 can still slide in the first sliding hole 131 after being preloaded in the first sliding hole 131, which is embodied that the motor bracket 130 can still slide relative to the base 110, so that the tension between the output shaft of the motor and the timing belt 140 can be adjusted by adjusting the relative position of the motor bracket 130.

Further, the number of the first mounting posts 150 and the second mounting posts 160 is set to be two or more, so that the movement between the motor bracket 130 and the base 110 is more stable after the preload member 170 is preloaded in the first mounting posts 150. Also, two or more first mounting posts 150 are arranged on both sides of the motor bracket 130, and two or more second mounting posts 160 are arranged on both sides of the motor bracket 130. As shown in fig. 1 to 6, the number of the first mounting posts 150 and the second mounting posts 160 is three, and the first mounting posts 150 and the second mounting posts 160 are arranged on the base 110 in two rows, wherein one row is one second mounting post 160 arranged between the two first mounting posts 150, and the other row is one second mounting post 160 arranged at the side of the two first mounting posts 150. Referring to the schematic views shown in fig. 7 to 8, the number of the first mounting posts 150 and the second mounting posts 160 is set to two, and the two first mounting posts 150 and the two second mounting posts 160 are arranged to cross each other and spaced apart from each other with respect to the base 110, so as to improve the stability of the motor bracket 130 when translating with respect to the base 110.

The installation method of the synchronous belt tension adjusting mechanism 100 is as follows:

first, the motor 120 is fixedly installed on the motor bracket 130, the timing belt 140 is connected to an output shaft of the motor 120, and the motor bracket 130 is disposed on the base 110. The preload member 170 is placed on a corresponding station, then the preload member 170 is locked in the first mounting column 150 so that the motor bracket 130 and the base 110 can still move relatively, the moving stroke range is the hole length of the first sliding hole 131, the tensioning degree of the synchronous belt 140 is adjusted through the moving distance, the tensioning force of the synchronous belt 140 meets the use requirement, and finally the fastener 180 is locked in the second mounting column 160 so that the motor bracket 130 and the base 110 are fixed, and the installation is completed.

It can be understood that the preferred embodiment provides the tension adjusting mechanism 100 for the timing belt to adjust the tension of the motor 120 during installation, and during use, the automatic tension of the timing belt can be achieved through, but not limited to, an elastic member.

The present invention further provides a camera (not shown), which comprises a camera and the tension adjusting mechanism 100 with the synchronous belt, wherein the camera is disposed in the base 110 and connected to the motor 120 via the synchronous belt 140, and the camera is driven by the motor 120 to rotate.

The utility model discloses a hold-in range tensile force adjustment mechanism 100 and have its camera, owing to it is controllable to fix the mode in advance, consequently this tensile force's regulation reliable and stable and high-efficient, tensioning is effectual, the cost is lower, higher with current structure suitability.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and if not stated otherwise, the terms have no special meaning, and therefore, the scope of the present invention should not be construed as being limited.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The synchronous belt tension adjusting mechanism is characterized by comprising a base (110), a motor (120), a motor support (130), a synchronous belt (140), a first mounting column (150), a second mounting column (160), a pre-tightening piece (170) and a fastening piece (180), wherein the motor (120) is fixed on the motor support (130), the first mounting column (150) and the second mounting column (160) are respectively fixed on the base (110), one end of the synchronous belt (140) is connected to an output shaft of the motor (120), and the other end of the synchronous belt is connected to the base (110);

a first sliding hole (131) and a second sliding hole (132) are respectively formed in the motor bracket (130), one end of the first mounting column (150) penetrates through the first sliding hole (131) and extends out of the motor bracket (130), and the pre-tightening piece (170) is fixed in the first mounting column (150) so that the motor bracket (130) can move along the length direction of the first sliding hole (131) relative to the base (110) to adjust the tension of the synchronous belt (140);

the fastener (180) passes through the second sliding hole (132) and is fixed in the second mounting column (160) so as to fix the motor bracket (130) on the base (110).

2. The synchronous belt tension adjustment mechanism of claim 1, wherein the first mounting post (150) comprises a post body (151) and a boss (152), the boss (152) is connected to the post body (151), a first shaft hole (153) is formed in the first mounting post (150) and penetrates through the post body (151) and the boss (152), and the preload member (170) is fixed in the first shaft hole (153).

3. The synchronous belt tension adjusting mechanism of claim 2, wherein the outer diameter of the boss (152) is smaller than the outer diameter of the cylinder (151), and the first sliding hole (131) is sleeved on the boss (152) and can move along the axial direction of the first sliding hole (131).

4. The synchronous belt tension adjusting mechanism of claim 3, wherein the boss (152) passes through the first sliding hole (131) and protrudes out of the motor bracket (130), and the height of the boss (152) protruding out of the motor bracket (130) is 0.3mm to 0.8 mm.

5. The synchronous belt tension adjustment mechanism of any of claims 2-4, wherein the boss (152) is integrally formed with the cylinder (151); or,

the boss (152) and the cylinder (151) adopt a split structure.

6. The synchronous belt tension adjustment mechanism of claim 1, wherein a length direction of the first slide hole (131) is the same as a length direction of the second slide hole (132); and/or the presence of a catalyst in the reaction mixture,

the width of the first slide hole (131) is greater than the width of the second slide hole (132).

7. The synchronous belt tension adjustment mechanism of claim 1, wherein the first mounting posts (150) and the second mounting posts (160) are respectively three in number and are arranged in two rows on the base (110) in opposition, one row being one of the second mounting posts (160) disposed between two of the first mounting posts (150) and the other row being one of the second mounting posts (160) disposed on the sides of two of the first mounting posts (150).

8. The synchronous belt tension adjustment mechanism of claim 1, wherein the first mounting post (150) and the second mounting post (160) are respectively provided in two numbers, and the two first mounting posts (150) and the two second mounting posts (160) are arranged to cross each other at intervals with respect to the base (110).

9. The synchronous belt tension adjustment mechanism of claim 1, wherein the preload member (170) and the fastener (180) are both screws.

10. A camera, comprising a camera head and the tension adjusting mechanism of the synchronous belt as claimed in any one of claims 1 to 9, wherein the camera head is disposed in the base (110) and connected to the motor (120) through the synchronous belt (140), and the camera head is driven by the motor (120) to rotate.